add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/drivers/mtd/nand/raw/mtk_ecc.c
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@@ -1,17 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0 OR MIT
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 /*
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  * MTK ECC controller driver.
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  * Copyright (C) 2016  MediaTek Inc.
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  * Authors:	Xiaolei Li		<xiaolei.li@mediatek.com>
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  *		Jorge Ramirez-Ortiz	<jorge.ramirez-ortiz@linaro.org>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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  */
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8
 
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 #include <linux/platform_device.h>
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@@ -51,6 +43,7 @@
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 struct mtk_ecc_caps {
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 	u32 err_mask;
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+	u32 err_shift;
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 	const u8 *ecc_strength;
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 	const u32 *ecc_regs;
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 	u8 num_ecc_strength;
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@@ -84,7 +77,7 @@
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 };
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 static const u8 ecc_strength_mt7622[] = {
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-	4, 6, 8, 10, 12, 14, 16
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+	4, 6, 8, 10, 12
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 };
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 enum mtk_ecc_regs {
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@@ -229,7 +222,7 @@
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 	for (i = 0; i < sectors; i++) {
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 		offset = (i >> 2) << 2;
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 		err = readl(ecc->regs + ECC_DECENUM0 + offset);
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-		err = err >> ((i % 4) * 8);
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+		err = err >> ((i % 4) * ecc->caps->err_shift);
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 		err &= ecc->caps->err_mask;
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 		if (err == ecc->caps->err_mask) {
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 			/* uncorrectable errors */
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@@ -267,11 +260,15 @@
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 	struct mtk_ecc *ecc;
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 	pdev = of_find_device_by_node(np);
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-	if (!pdev || !platform_get_drvdata(pdev))
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+	if (!pdev)
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 		return ERR_PTR(-EPROBE_DEFER);
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-	get_device(&pdev->dev);
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 	ecc = platform_get_drvdata(pdev);
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+	if (!ecc) {
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+		put_device(&pdev->dev);
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+		return ERR_PTR(-EPROBE_DEFER);
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+	}
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+
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 	clk_prepare_enable(ecc->clk);
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 	mtk_ecc_hw_init(ecc);
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@@ -453,6 +450,7 @@
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 static const struct mtk_ecc_caps mtk_ecc_caps_mt2701 = {
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 	.err_mask = 0x3f,
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+	.err_shift = 8,
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 	.ecc_strength = ecc_strength_mt2701,
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 	.ecc_regs = mt2701_ecc_regs,
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 	.num_ecc_strength = 20,
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@@ -463,6 +461,7 @@
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 static const struct mtk_ecc_caps mtk_ecc_caps_mt2712 = {
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 	.err_mask = 0x7f,
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+	.err_shift = 8,
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 	.ecc_strength = ecc_strength_mt2712,
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 	.ecc_regs = mt2712_ecc_regs,
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 	.num_ecc_strength = 23,
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@@ -472,10 +471,11 @@
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 };
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 static const struct mtk_ecc_caps mtk_ecc_caps_mt7622 = {
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-	.err_mask = 0x3f,
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+	.err_mask = 0x1f,
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+	.err_shift = 5,
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 	.ecc_strength = ecc_strength_mt7622,
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 	.ecc_regs = mt7622_ecc_regs,
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-	.num_ecc_strength = 7,
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+	.num_ecc_strength = 5,
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 	.ecc_mode_shift = 4,
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 	.parity_bits = 13,
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 	.pg_irq_sel = 0,
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@@ -531,10 +531,8 @@
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 	}
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 	irq = platform_get_irq(pdev, 0);
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-	if (irq < 0) {
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-		dev_err(dev, "failed to get irq: %d\n", irq);
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+	if (irq < 0)
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 		return irq;
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-	}
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 	ret = dma_set_mask(dev, DMA_BIT_MASK(32));
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 	if (ret) {
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@@ -600,4 +598,4 @@
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 MODULE_AUTHOR("Xiaolei Li <xiaolei.li@mediatek.com>");
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 MODULE_DESCRIPTION("MTK Nand ECC Driver");
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-MODULE_LICENSE("GPL");
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+MODULE_LICENSE("Dual MIT/GPL");